In Croatia, Gaiser families are predominantly Croats (from Zapresic area ), rarely Slovenes (from Nova Gradiska ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Nova Gradiska.
Prevalence
About 10 people with faimily name Gaiser live in Croatia today, in 6 households. There were 0 of them in the middle of the past century, and their number multiplied. They are located in only threee naselja i to in Zagreb (<10), Kraj Gornji in Zapresic area (<5), and in Zapresic (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.